DOCSLIB.ORG

Rocky Intertidal Resources Monitoring Handbook, Cabrillo National Monument Point Loma, San Diego, California

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Rocky Intertidal Resources Monitoring Handbook, Cabrillo National Monument Point Loma, San Diego, California Rocky Intertidal Resources Monitoring Handbook, Cabrillo National Monument Point Loma, San Diego, California By John M. Engle1 and Gary E. Davis: U.S. GEOLOGICAL SURVEY Open-File Report 00-202 Prepared for: Cabrillo Historical Association Cabrillo National Monument Point Loma, California !7554 Palos Verdes Drive Goleta, California 93117 2National Biological Service Channel Islands National Park 1901 Spinnaker Drive Ventura, California 93001 Sacramento, California 2000 U.S. DEPARTMENT OF THE INTERIOR BRUCE BABBITT, Secretary U.S. GEOLOGICAL SURVEY Charles G. Groat, Director The use of firm, trade, and brand names in this report is for identification purposes only and does not constitute endorsement by the U.S. Geological Survey For additional information write to: Copies of this report can be purchased Center Director from: Western Ecological Research Center U.S. Geological Survey U.S. Geological Survey Placer Hall, Suite 2012 Information Services 6000 J Street Box 25286 Sacramento, CA 95819-6129 Federal Center Denver, CO 80225 Table of Contents Table of Contents...........................................................................................................................Ill List of Tables................................................................................................................................IV List of Figures............................................................................................................................... IV List of Forms................................................................................................................................. IV 1. Introduction.................................................................................................................................! 2. Survey Background and Planning...............................................................................................! 2.1 Survey sites...................................................................................................................2 2.2 Target species assemblages...........................................................................................3 2.3 Fixed plots and transects...............................................................................................3 2.4 Survey scheduling.........................................................................................................4 2.5 Personnel.......................................................................................................................4 2.6 Logistics........................................................................................................................4 3. Survey Methods..........................................................................................................................5 3.1 Site reconnaissance.......................................................................................................5 3.2 Video overview (optional) ............................................................................................5 3.2.1 Video procedures...........................................................................................6 3.2.2 Guidelines for best video results....................................................................? 3.3 Photoplot surveys..........................................................................................................9 3.4 Circular plot surveys...................................................................................................10 3.5 Line intercept transect surveys....................................................................................10 3.6 Timed searches............................................................................................................ 11 3.7 Visitor and bird census................................................................................................11 3.8 Data management........................................................................................................ 12 III List of Tables Table 1. Index Taxa and Monitoring Techniques at Cabrillo National Monument Sites..............13 Table 2. Rocky Intertidal Monitoring Plots and Plot Identification Codes ...................................14 Table 3. Rocky Intertidal Survey Tasks.........................................................................................15 Table 4. Area I Rocky Intertidal Interplot Measurements.............................................................16 Table 5. Area II Rocky Intertidal Interplot Measurements............................................................17 Table 6. Area III Rocky Intertidal Interplot Measurements ..........................................................18 List of Figures Figure 1. Point Loma Rocky Intertidal Monitoring Sites............................................................19 Figure 2. Visitor Use and Intertidal Monitoring Areas in Cabrillo National Monument............20 Figure 3. Cabrillo National Monument Area I Map ....................................................................21 Figure 4. Cabrillo National Monument Area II Map...................................................................22 Figure 5. Cabrillo National Monument Area III North Map .......................................................23 Figure 6. Cabrillo National Monument Area III South Map.......................................................24 Figure 7. Photoplot Quadrapod Apparatus ..................................................................................25 List of Forms Form 1. Rocky Intertidal Interplot Measurements........................................................................26 Form 2. Rocky Intertidal Survey Gear..........................................................................................27 Form 3. Rocky Intertidal Monitoring Field Log ...........................................................................28 Form 4. Rocky Intertidal Monitoring Photo Log ..........................................................................29 Form 5 Rocky Intertidal Monitoring Owl Limpet Measurements ...............................................30 Form 6. Rocky Intertidal Monitoring Line Transect Data ............................................................31 Form 7. Rocky Intertidal Abalone/Sea Star Counts......................................................................32 Form 8. Rocky Intertidal Monitoring People and Bird Census.....................................................33 Form 9. Rocky Intertidal Monitoring Photo Point Intercept Scores .............................................34 IV 1. Introduction Long-term monitoring of biological resources and public use in rocky intertidal habitats at Cabrillo National Monument was initiated in 1990 in order to assess dynamic ecological conditions with respect to impacts from public visitation and other human activities in the San Diego metropolitan area. Public access to the monument's intertidal zone is restricted to a single point on the western coast of Point Loma approximately 800 m north of the tip of the peninsula (Figs. 1 & 2). From this point, visitors can explore about 1 km of open ocean shoreline without crossing deep channels that extend to the base of steep cliffs, or moving around the southern tip of the Point into San Diego Bay. This situation creates an apparent gradient of public use extending from the access location downcoast to the Point. The resource monitoring stations were stratified into 3 areas along this presumed human use gradient, with each area encompassing roughly 330 m of shoreline (Fig. 2). Each of the survey locations, designated Area I, Area II, and Area III (Figs. 1 & 2), have been monitored semi-annually (Spring and Fall) for the past 6 yr. Two sites north of the Monument, Navy North and South (Fig. 1), have been monitored in 1995 using the same techniques. A separate manual has been developed for the Navy sites. Continued monitoring of all 5 sites in future years is highly recommended. Biological surveys at these locations provide quantitative seasonal data for index species in fixed plots or transects, and qualitative inventory data for other plants and animals whenever possible. In addition, Cabrillo National Monument personnel collect data on prevailing sea/weather conditions and abundances of birds and visitors at the Monument sites whenever possible during daytime low tide periods. This handbook provides guidelines and specifies procedures for monitoring target species assemblages at Area I, Area II And Area III rocky intertidal sites at the Cabrillo National Monument, Point Loma, San Diego. The handbook will help survey teams prepare for surveys, locate the permanent study plots and standardize sampling procedures for future surveys at these sites, either for continued seasonal monitoring or for impact prevention or assessment studies should the need arise. Visitor and bird census methods and survey data management techniques also are described. 2. Survey Background and Planning This section provides background information about the survey sites, target species, and fixed plots. Survey planning activities are discussed, including scheduling, personnel, and logistical considerations. The guidelines are based on practical experience with intertidal monitoring surveys and field conditions encountered at the Cabrillo National Monument sites since 1990. The guidelines should not be applied rigidly because each survey has its particular circumstances (e.g.,
Load more

Recommended publications
  • The 2014 Golden Gate National Parks Bioblitz - Data Management and the Event Species List Achieving a Quality Dataset from a Large Scale Event
    National Park Service U.S. Department of the Interior Natural Resource Stewardship and Science The 2014 Golden Gate National Parks BioBlitz - Data Management and the Event Species List Achieving a Quality Dataset from a Large Scale Event Natural Resource Report NPS/GOGA/NRR—2016/1147 ON THIS PAGE Photograph of BioBlitz participants conducting data entry into iNaturalist. Photograph courtesy of the National Park Service. ON THE COVER Photograph of BioBlitz participants collecting aquatic species data in the Presidio of San Francisco. Photograph courtesy of National Park Service. The 2014 Golden Gate National Parks BioBlitz - Data Management and the Event Species List Achieving a Quality Dataset from a Large Scale Event Natural Resource Report NPS/GOGA/NRR—2016/1147 Elizabeth Edson1, Michelle O’Herron1, Alison Forrestel2, Daniel George3 1Golden Gate Parks Conservancy Building 201 Fort Mason San Francisco, CA 94129 2National Park Service. Golden Gate National Recreation Area Fort Cronkhite, Bldg. 1061 Sausalito, CA 94965 3National Park Service. San Francisco Bay Area Network Inventory & Monitoring Program Manager Fort Cronkhite, Bldg. 1063 Sausalito, CA 94965 March 2016 U.S. Department of the Interior National Park Service Natural Resource Stewardship and Science Fort Collins, Colorado The National Park Service, Natural Resource Stewardship and Science office in Fort Collins, Colorado, publishes a range of reports that address natural resource topics. These reports are of interest and applicability to a broad audience in the National Park Service and others in natural resource management, including scientists, conservation and environmental constituencies, and the public. The Natural Resource Report Series is used to disseminate comprehensive information and analysis about natural resources and related topics concerning lands managed by the National Park Service.
    [Show full text]
  • PROTISTS Shore and the Waves Are Large, Often the Largest of a Storm Event, and with a Long Period
    (seas), and these waves can mobilize boulders. During this phase of the storm the rapid changes in current direction caused by these large, short-period waves generate high accelerative forces, and it is these forces that ultimately can move even large boulders. Traditionally, most rocky-intertidal ecological stud- ies have been conducted on rocky platforms where the substrate is composed of stable basement rock. Projec- tiles tend to be uncommon in these types of habitats, and damage from projectiles is usually light. Perhaps for this reason the role of projectiles in intertidal ecology has received little attention. Boulder-fi eld intertidal zones are as common as, if not more common than, rock plat- forms. In boulder fi elds, projectiles are abundant, and the evidence of damage due to projectiles is obvious. Here projectiles may be one of the most important defi ning physical forces in the habitat. SEE ALSO THE FOLLOWING ARTICLES Geology, Coastal / Habitat Alteration / Hydrodynamic Forces / Wave Exposure FURTHER READING Carstens. T. 1968. Wave forces on boundaries and submerged bodies. Sarsia FIGURE 6 The intertidal zone on the north side of Cape Blanco, 34: 37–60. Oregon. The large, smooth boulders are made of serpentine, while Dayton, P. K. 1971. Competition, disturbance, and community organi- the surrounding rock from which the intertidal platform is formed zation: the provision and subsequent utilization of space in a rocky is sandstone. The smooth boulders are from a source outside the intertidal community. Ecological Monographs 45: 137–159. intertidal zone and were carried into the intertidal zone by waves. Levin, S. A., and R.
    [Show full text]
  • OREGON ESTUARINE INVERTEBRATES an Illustrated Guide to the Common and Important Invertebrate Animals
    OREGON ESTUARINE INVERTEBRATES An Illustrated Guide to the Common and Important Invertebrate Animals By Paul Rudy, Jr. Lynn Hay Rudy Oregon Institute of Marine Biology University of Oregon Charleston, Oregon 97420 Contract No. 79-111 Project Officer Jay F. Watson U.S. Fish and Wildlife Service 500 N.E. Multnomah Street Portland, Oregon 97232 Performed for National Coastal Ecosystems Team Office of Biological Services Fish and Wildlife Service U.S. Department of Interior Washington, D.C. 20240 Table of Contents Introduction CNIDARIA Hydrozoa Aequorea aequorea ................................................................ 6 Obelia longissima .................................................................. 8 Polyorchis penicillatus 10 Tubularia crocea ................................................................. 12 Anthozoa Anthopleura artemisia ................................. 14 Anthopleura elegantissima .................................................. 16 Haliplanella luciae .................................................................. 18 Nematostella vectensis ......................................................... 20 Metridium senile .................................................................... 22 NEMERTEA Amphiporus imparispinosus ................................................ 24 Carinoma mutabilis ................................................................ 26 Cerebratulus californiensis .................................................. 28 Lineus ruber .........................................................................
    [Show full text]
  • Koch 1 Effects of Increased Pco2 Levels on the Nematocyst Densities
    Effects of increased pCO2 levels on the nematocyst densities in the symbiotic sea anemone Anthopleura elegantissima Jack C Koch1,2 Marine Invertebrate Zoology Summer A 2014 1Friday Harbor Laboratories, University of Washington, WA 98250 2Department of Biology, University of North Carolina at Wilmington, Wilmington, NC 28407 Contact Information: Jack C Koch Biology Department University of North Carolina at Wilmington 601 South College Road Wilmington, NC 28407 [email protected] Keywords: Anthopleura elegantissima, Aggregating Anemone, Green Aggregating Anemone, ocean acidification, nematocyst, nematocyst density, symbiosis, pCO2 Koch 1 ABSTRACT The temperate sea anemone Anthopleura elegantissima participates in a facultative symbiosis with two genera of unicellular photosynthetic algae. Under stressful conditions such as increased levels of pCO2, anemones expel their algal symbionts causing the anemones to rely more heavily upon heterotrophic feeding. A heavier reliance on heterotrophic feeding could be accomplished by increasing the density of nematocysts. Anthopleura elegantissima individuals were collected from the Friday Harbor Laboratories shoreline (48° 32.7646 N, 123° 00.5932 W), Washington in June 2014, and the number of nematocyst per µg of protein was measured to determine if increasing oceanic pCO2 levels will affect the density of nematocysts. The number of nematocyst per µg of protein was measured again after 7 days in higher (2200 µatm) or ambient (700 µatm) pCO2 conditions. There was no difference in the density of nematocysts between individuals kept in different pCO2 levels. INTRODUCTION The symbiosis between cnidarians and unicellular phototrophic algae can be a facultative or obligate relationship. The cnidarian-algal symbiosis is found worldwide and constitutes an important raw material trade between host and symbiont.
    [Show full text]
  • A Comparative Intertidal Study and User Survey, Point Pinos, California
    Monterey Bay National Marine Sanctuary A Comparative Intertidal Study and User Survey, Point Pinos, California July 31, 2003 Submitted to: Mr. Dennis Long, Executive Director Monterey Bay Sanctuary Foundation 299 Foam Street Monterey, CA 93940 Prepared and Submitted by: Environmental 225 Prado Rd., Suite D, San Luis Obispo, CA 93401 805.541.0310, FAX: 805.541.0421 Preface In April 2000, the City of Pacific Grove contracted with the Monterey Bay Sanctuary Foundation (MBSF) to serve as the neutral fiscal sponsor for a project to study the impacts of human activities on the rocky intertidal shore and tidepools at Point Pinos. The City created a Point Pinos Tidepool Task Force Subcommittee on Research to develop and oversee the research project and interface with the MBSF. The Subcommittee members were appointed from numerous interested parties with differing views on potential impacts resulting from visitor use. The Subcommittee was responsible for: developing a Request for Proposals (RFP), distributing the RFP to solicit research proposals, and selecting a contractor based on proposed methods and qualifications. The Subcommittee was also responsible for approving the final and more detailed study plan submitted by the selected contractor, reviewing quarterly progress reports, and approving the final report on the project. The RFP, designed to address four primary questions concerning patterns of visitor use, activities, impacts, and past changes at Point Pinos, was circulated to the coastal and marine science communities for solicitation of proposals. Throughout the entire process of proposal review and contractor selection, including project implementation, the Subcommittee required that rigorous science be incorporated into the project plans.
    [Show full text]
  • Experimental Investigation of Tidal and Freshwater Influence on Symbiodiniummuscatinei Abundance in Its Host, Anthopleura Elegantissima
    EXPERIMENTAL INVESTIGATION OF TIDAL AND FRESHWATER INFLUENCE ON SYMBIODINIUMMUSCATINEI ABUNDANCE IN ITS HOST, ANTHOPLEURA ELEGANTISSIMA A Thesis submitted to the faculty of San Francisco State University Z o lQ In partial fulfillment of the requirements for H A t X the Degree Master of Science In Marine Science by Daniel John Hossfeld San Francisco, California May 2019 Copyright by Daniel John Hossfeld 2019 CERTIFICATION OF APPROVAL I certify that I have read Experimental investigation of tidal and freshwater influence on Symbiodinium muscatinei abundance in its host, Anthopleura elegantissima by Daniel John Hossfeld, and that in my opinion this work meets the criteria for approving a thesis submitted in partial fulfillment of the requirement for the degree Master of Science in Marine Science at San Francisco State University. Sarah Cohen, Ph.D. Professor Lorraine Ling, Ph.D. Postdoc Researcher at Stanford University EXPERIMENTAL INVESTIGATION OF TIDAL AND FRESHWATER INFLUENCE ON SYMBIODINIUMMUSCAT1NEI ABUNDANCE IN ITS HOST, ANTHOPLEURA ELEGANTISSIMA Daniel John Hossfeld San Francisco, California 2019 Controlled experiments testing effects of temperature, salinity, and aerial exposure were paired with field observations to investigate symbiont expulsion in the abundant intertidal anemone, Anthopleura elegantissima. In the study region, A. elegantissima hosts a single symbiont, the dinoflagellate Symbiodinium muscatinei. The San Francisco Bay outflow creates a tidally influenced low-salinity plume that impacts adjacent coastal sites. Salinity, temperature, and aerial stress induce a bleaching response similar to corals where symbionts are expelled, causing further energetic stress. Using field observations of environmental conditions and symbiont abundance at sites on a gradient of exposure to estuarine outflow, along with fully crossed multifactorial lab experiments, we tested for changes in symbiont abundance in response to various combinations of three stressors.
    [Show full text]
  • B45p2g6qnp.Pdf
    Marine Life: Life on the Benthos II Evolutionary cladogram of the major marine taxa. The organisms are more complex and/or derived as you move from sponges to chordates. Phylum Cnidaria Sea Jellies (NOT jellyfish), sea anemones, corals, hydra, etc. - Key characteristics: First major phylum with true tissue types. These organisms are diploblastic (2 true tissue types) that derive from the development of the embryo. The ectoderm has specialized cells for the outer covering or epidermis of the Cnidarian, but also the cells and tissues of the nervous system (called the nerve net). The endoderm are the tissues that make up the reproductive organs and the very simple blind sac-gut (digestive system). Cnidarians lack a true mesoderm tissue layer, but instead has a characteristic layer called the mesoglea. The mesoglea is a jelly- like substance that is a carbohydrate-protein complex and gives Cnidarians their easily identifiable “jelly’like” constitutions. Most Cnidarians also have specialized structures called cnidils. These structures, in turn, contain nematocysts. These are the stinging cells that are the identifying characteristic for the group. The Portugese man-o-war (Physalia spp.), a holoplanktonic Cnidarian (Class Hydrozoa), with the nematocyst highlighted. There are 3 important subgroups for the phylum Cnidaria. Class Hydrozoa, which includes the hydra and the sometimes dangerous Portuguese man-o-war. Class Scyphozoa, which includes all of the sea jellies (NOT jellyfish...), which are mostly planktonic, but many have benthic early life history stages. Class Anthozoa includes the sea anemones and corals which are all benthic. Some of these critters have planktonic larval stages, but the adult stage is benthic.
    [Show full text]
  • Kachemak Bay Research Reserve: a Unit of the National Estuarine Research Reserve System
    Kachemak Bay Ecological Characterization A Site Profile of the Kachemak Bay Research Reserve: A Unit of the National Estuarine Research Reserve System Compiled by Carmen Field and Coowe Walker Kachemak Bay Research Reserve Homer, Alaska Published by the Kachemak Bay Research Reserve Homer, Alaska 2003 Kachemak Bay Research Reserve Site Profile Contents Section Page Number About this document………………………………………………………………………………………………………… .4 Acknowledgements…………………………………………………………………………………………………………… 4 Introduction to the Reserve ……………………………………………………………………………………………..5 Physical Environment Climate…………………………………………………………………………………………………… 7 Ocean and Coasts…………………………………………………………………………………..11 Geomorphology and Soils……………………………………………………………………...17 Hydrology and Water Quality………………………………………………………………. 23 Marine Environment Introduction to Marine Environment……………………………………………………. 27 Intertidal Overview………………………………………………………………………………. 30 Tidal Salt Marshes………………………………………………………………………………….32 Mudflats and Beaches………………………………………………………………………… ….37 Sand, Gravel and Cobble Beaches………………………………………………………. .40 Rocky Intertidal……………………………………………………………………………………. 43 Eelgrass Beds………………………………………………………………………………………… 46 Subtidal Overview………………………………………………………………………………… 49 Midwater Communities…………………………………………………………………………. 51 Shell debris communities…………………………………………………………………….. 53 Subtidal soft bottom communities………………………………………………………. 54 Kelp Forests…………………………………………………….…………………………………….59 Terrestrial Environment…………………………………………………………………………………………………. 61 Human Dimension Overview……………………………………………………………………………………………….
    [Show full text]
  • Intertidal Zones Cnidaria (Stinging Animals)
    Intertidal Zones Cnidaria (stinging animals) Green anemone (Anthopleura anthogrammica) The green anemone is mainly an outer-coast species. Microscopic algae live symbiotically inside this anemone, give the anemone its green color, and provide it with food from photosynthesis. The green anemone can be solitary or live in groups, and are often found in tidepools. This anemone only reproduces sexually. Touch the anemone very gently with one wet finger and see how it feels! Aggregating anemone (Anthopleura elegantissima) The aggregating anemone reproduces both sexually and asexually. It reproduces sexually by releasing eggs and sperm into the water. To reproduce asexually, it stretches itself into an oval column, and then keeps “walking away from itself” until it splits in half. The two “cut” edges of a half-anemone heal together, forming a complete, round column, and two clones instead of one. Aggregate anemone colonies are known for fighting with other colonies of these asexually- produced clones. When different clone colonies meet they will attack each other by releasing the stinging cells in their tentacles. This warfare usually results in an open space between two competing clone colonies known as “a neutral zone”. Aggregate anemones also house symbiotic algae that give the animal its green color. The rest of the food it needs comes from prey items captured by the stinging tentacles such as small crabs, shrimp, or fish. Genetically identical, clones can colonize and completely cover rocks. Be very careful when walking on the rocks…aggregating anemones are hard to spot at first and look like sandy blobs. Watch where you step so you don’t crush anemone colonies.
    [Show full text]
  • Anthopleura Xanthogrammica Behavior Studied Utilizing Time-Lapse Photography
    Anthopleura xanthogrammica Behavior Studied Utilizing Time-Lapse Photography By Shannon Reiser A Thesis Presented to the Department of Biology and the Robert D. Clark Honors College in partial fulfillment of the requirements for the degree of Bachelor of Science. November 2013 An Abstract of the Thesis of Shannon Reiser for the degree of Bachelor of Science in the department of Biology to be taken Fall 2013 Title: ANTHOPLEURA XANTHOGRAMMICA BEHAVIOR STUDIED UTILIZING TIME-LAPSE PHOTOGRAPHY Approved: ~Z Date: I~ Aee. 2-0f'r Craigyotltlg epartment of Biology Animals living in a habitat affected by both tidal shifts and day night cycles display a wide variety of behaviors influenced by environmental factors and internal mechanisms. Sessile intertidal invertebrates exhibit extremely slow or subtle behaviors not noticeable during casual observation. This study aimed to observe, analyze, and describe the behaviors associated with the tidal and circadian rhythms of Anthopleura xanthogrammica, giant green anemones, in a tide pool at South Cove, Cape Arago State Park, Oregon. Time lapse video captured using a GoPro camera at a low- to mid-tidal range were used to test the hypothesis A. xamlzogrammica opens on incoming tides. Percent open data were collected from videos and these data were used to evaluate the percentage of animals open in different light conditions. I also examined the data for individual sea anemones to determine if there were individual tendencies. The data suggest that there is a correlation between height of tide and anemone openness. As the tide rises fewer anemones are closed. Additionally the data suggest that anemones are more likely to be closed in direct sunlight.
    [Show full text]
  • Every Square Inch Counts
    Every Square Inch Counts: Monitoring Abundance in the Rocky Intertidal Zone and Subtidal Zone with Life-Sized Photos Using life-sized photographs, students participate in environmental monitoring of rocky intertidal and subtidal organisms. SUBJECTS BACKGROUND Science The five West Coast National Marine Sanctuaries (Olympic Coast, Cordell Bank, Gulf of the Farallones, Monterey Bay and Channel GRADE LEVEL Islands) are working together to use field-based workshops and 7 - 12 emerging technologies to engage middle and high school students in environmental monitoring efforts. The Long-term Monitoring TIME Program and Experiential Training for Students (LiMPETS) program 45 minutes was developed to standardize environmental monitoring protocols for sandy beach and rocky intertidal zones in the West Coast National Marine Sanctuaries. Students involved in the monitoring OBJECTIVES projects are able to compare and contrast their information with data Students will be able to • visually identify the following collected at other sites. This activity allows students to practice the rocky intertidal organisms: sampling techniques in the classroom before going into the field. giant green anemones, chitons, whelks, turban snails, green Measuring the relative abundance is a way to determine the health pin-cushion alga, sea lettuce, of an area. Large numbers of people frequently visit rocky intertidal rockweeds, coralline algae, areas, which can adversely affect the health of the environment. red algal turf, turkish towel, The baseline data collected by the LiMPETS network is part of an iridescent algae, aggregating online database that allows the sanctuary to track changes in the anemones, limpets, mussels and environment over time. acorn barnacles. • visually identify the following Intertidal monitoring in the field is done along a transect line that subtidal organisms: hydrocoral, orange cup coral, sponge, runs from the low tide zone to the high tide zone.
    [Show full text]
  • Regional Beach Sand Project Year 2
    TABLE OF CONTENTS Page EXECUTIVE SUMMARY........................................................................................................... 1 PROJECT OVERVIEW .............................................................................................................. 3 MARINE RESOURCES MONITORING......................................................................................... 4 LIST OF REPORTS 3DJH ROCKY INTERTIDAL MONITORING REPORT ........................................................... RI-1 SHALLOW SUBTIDAL MONITORING REPORT .......................................................... SS-1 KELP FOREST MONITORING REPORT........................................................................ KF-1 LOBSTER MONITORING REPORT................................................................................. LB-1 Page i EXECUTIVE SUMMARY The purpose of the Regional Beach Sand Project (RBSP) was to dredge up to two million cubic yards (cy) of sand from up to six offshore borrow sites and replenish 12 beaches along the coast of San Diego County from Oceanside to the north to Imperial Beach to the south. Construction started on April 6, 2001 and was completed on September 23, 2001. During the environmental review process, sediment transport modeling was conducted to determine the eventual fate of the sand to avoid any potential impacts to marine resources. These resources include rocky intertidal platforms, shallow subtidal reefs, and kelp beds. Despite the results of the modeling, concern from commercial fisherman and the
    [Show full text]